Preconcentration of rare earth elements in seawater with poly(acrylaminophosphonic dithiocarbamate) chelating fiber prior to determination by inductively coupled plasma mass spectrometry

被引:78
作者
Zhang, TH [1 ]
Shan, XQ [1 ]
Liu, RX [1 ]
Tang, HX [1 ]
Zhang, SZ [1 ]
机构
[1] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China
关键词
D O I
10.1021/ac980321h
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A new ion-exchange chelating fiber with aminophosphonic and dithiocarbamate groups based on polyacrylonitrile was developed for the preconcentration of rare earth elements (REEs) in seawater prior to their determination by inductively coupled plasma mass spectrometry. REEs can be easily separated from the high-saline matrix using the fiber. The optimum experimental parameters such as pH, now rate, sample volume, and effect of matrix ions for preconcentration of REEs were investigated. All REEs in water can be quantitatively retained in the acidity range of pH 3-6 by the fiber and then eluted quantitatively with 0.01 mol L-1 ammonium citrate. The fiber has been applied to the concentration of REEs in seawater. The relative standard deviations for the determination of REEs in seawater at nanogram per liter levels were found to be less than 5%. A reasonably good agreement is obtained with the data reported in the literature.
引用
收藏
页码:3964 / 3968
页数:5
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